1 files changed, 96 insertions, 0 deletions
diff --git a/setup_native/source/win32/customactions/shellextensions/migrateinstallpath.cxx b/setup_native/source/win32/customactions/shellextensions/migrateinstallpath.cxx
new file mode 100644
index 000000000..10c817169
--- /dev/null
+++ b/setup_native/source/win32/customactions/shellextensions/migrateinstallpath.cxx
@@ -0,0 +1,96 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "shlxtmsi.hxx"
+#include <algorithm>
+#include <sstream>
+#include <systools/win32/uwinapi.h>
+
+extern "C" __declspec(dllexport) UINT __stdcall MigrateInstallPath(MSIHANDLE handle)
+{
+    std::wstring sInstDir = GetMsiPropertyW(handle, L"INSTALLLOCATION");
+    if (!sInstDir.empty())
+        return ERROR_SUCCESS; // Don't overwrite explicitly set value
+
+    auto RegValue = [](HKEY hRoot, const WCHAR* sKey, const WCHAR* sVal) {
+        std::wstring sResult;
+        WCHAR buf[32767]; // max longpath
+        DWORD bufsize = sizeof(buf); // yes, it is the number of bytes
+        if (RegGetValueW(hRoot, sKey, sVal, RRF_RT_REG_SZ, nullptr, buf, &bufsize) == ERROR_SUCCESS)
+            sResult = buf; // RegGetValueW null-terminates strings
+
+        return sResult;
+    };
+
+    const std::wstring sManufacturer = GetMsiPropertyW( handle, L"Manufacturer" );
+    const std::wstring sDefinedName = GetMsiPropertyW( handle, L"DEFINEDPRODUCT" );
+    const std::wstring sUpdateVersion = GetMsiPropertyW( handle, L"DEFINEDVERSION" );
+    const std::wstring sUpgradeCode = GetMsiPropertyW( handle, L"UpgradeCode" );
+    const std::wstring sBrandPackageVersion = GetMsiPropertyW(handle, L"BRANDPACKAGEVERSION");
+
+    std::wstring   sKey = L"Software\\" + sManufacturer + L"\\" + sDefinedName +
+                                        L"\\" + sUpdateVersion + L"\\" + sUpgradeCode;
+
+    sInstDir = RegValue(HKEY_CURRENT_USER, sKey.c_str(), L"INSTALLLOCATION");
+    if (sInstDir.empty())
+        sInstDir = RegValue(HKEY_LOCAL_MACHINE, sKey.c_str(), L"INSTALLLOCATION");
+    // See #i93032# for layers description
+    if (sInstDir.empty())
+    {
+        sKey = L"Software\\LibreOffice\\Layers\\" + sDefinedName + L"\\" + sBrandPackageVersion;
+        sInstDir = RegValue(HKEY_CURRENT_USER, sKey.c_str(), L"INSTALLLOCATION");
+    }
+    if (sInstDir.empty())
+    {
+        sKey = L"Software\\LibreOffice\\Layers_\\" + sDefinedName + L"\\" + sBrandPackageVersion;
+        sInstDir = RegValue(HKEY_CURRENT_USER, sKey.c_str(), L"INSTALLLOCATION");
+    }
+    if (sInstDir.empty())
+    {
+        sKey = L"Software\\LibreOffice\\Layers\\" + sDefinedName + L"\\" + sBrandPackageVersion;
+        sInstDir = RegValue(HKEY_LOCAL_MACHINE, sKey.c_str(), L"INSTALLLOCATION");
+    }
+    if (sInstDir.empty())
+    {
+        sKey = L"Software\\LibreOffice\\Layers_\\" + sDefinedName + L"\\" + sBrandPackageVersion;
+        sInstDir = RegValue(HKEY_LOCAL_MACHINE, sKey.c_str(), L"INSTALLLOCATION");
+    }
+    if (sInstDir.empty())
+    {
+        std::wistringstream sOlds{ GetMsiPropertyW(handle, L"OLDPRODUCTS") };
+        std::wstring sOld;
+        while (std::getline(sOlds, sOld, L';'))
+        {
+            if (sOld.empty())
+                continue;
+            sKey = L"Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\" + sOld;
+            sInstDir = RegValue(HKEY_LOCAL_MACHINE, sKey.c_str(), L"InstallLocation");
+            if (!sInstDir.empty())
+                break;
+        }
+    }
+
+    if (!sInstDir.empty())
+        MsiSetPropertyW(handle, L"INSTALLLOCATION", sInstDir.c_str());
+
+    return ERROR_SUCCESS;
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */